Home / 12,311.58-18,469.19-4,519.79

Finding the Fourth Proportional to 12,311.58, 18,469.19 and 4,519.79

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Solution

The fourth proportional to 12,311.58, 18,469.19 and 4,519.79 is: 6,780.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.58 : 18,469.19 = 4,519.79 : x
  2. Step 2: Convert to fraction form
    12,311.58/18,469.19 = 4,519.79/x
  3. Step 3: Cross multiply
    12,311.58x = 18,469.19 × 4,519.79
  4. Step 4: Simplify right side
    12,311.58x = 83,476,745.33
  5. Step 5: Solve for x
    x = 83,476,745.33/12,311.58
  6. Step 6: Final answer
    x = 6,780.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.